Why Are Rule Representations Difficult to Form ?

Small Targets: Why are they So Difficult to Acquire?

Facilitating the acquisition of small targets is an active area of research. Despite the usefulness of the techniques proposed so far, we show why this topic can benefit from more fundamental work. We investigate three factors that might account for the observed drop in performance when selecting small targets: motor accuracy, visual legibility and quantization. Our findings suggest that visual...

Why are Ferroelectric Polymers Difficult to Find – And Difficult to Verify

Why are some representations (sometimes) more effective?

Graphical representations are used heavily in systems analysis and design without proper verification of their usability. However, different representations have varying impact on the effectiveness of systems analysts. The objective of this study was to explore the effects of diagrammatic representations on task behavior and performance. A cognitive model of an analysis and design task using di...

Resolving Difficult Phylogenetic Questions: Why More Sequences Are Not Enough

1 Département de Biochimie, Centre Robert-Cedergren, Université de Montréal, Montréal, Québec, Canada, 2 Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, Iowa, United States of America, 3 Department of Zoology, The Natural History Museum, London, United Kingdom, 4 Université Paris 6, UMR 7138 "Systématique, Adaptation, Evolution" UPMC CNRS IRD MHNH, Paris, ...

Why are the next steps in biomaterials research so difficult?

Strategically, ‘biomaterials research’ should be refocusing its science on new areas – but it has not! Traditionally, biomaterials research has been heavily leveraged in ‘synthetic biomaterials product-testing’, but it should be moving towards ‘biological materials and clinical research’. There is an adage (Lubin’s Rule) that says ‘If another scientist thought your research was more important t...